Roux: 6-Edge with M-Slice or rR'?

[Cubo94]

Hi!!

You told me that I must improve my 6-Edge, and so is my question: Should I do it with M-Slice or with rR' ? What is/will be faster?

Cubo

 

[rahulkadukar]

I have seen some videos recently and they were performing some sort of M Slice fingertrickasand believe me it was fast